Ash sifter for furnaces



Mar. 27, 1923. 1,449,838

J. RAPP ASH SIFTER FOR FURNACES Filed Nov. 2 6, 1921 2 sheets-sheet 1 Mar. 27,. 1923. 1,449,838 I J. RAPP ASH SIFTER FOR FURNACES,

Fi led Nov. 26, 1921 2 shcet s-sheet 2 Patented Mar. 27, 1923.

UNITED STATES JOHN RAPP, 0F DOWAGIAC, MICHIGAN.

ASH SIFTER FOR FURNACES.

Application filed November 26, 1921.

To all whom it may concern,

Be it known that I, JOHN RAPP, a citizen of the United States, residing at Dowagiac, county of Cass, State of Michigan, have invented certain new and useful Improvements in Ash Sifters for Furnaces, of which the following is a specification.

This invention relates to improvements in ash sitters for furnaces.

The object of the invention is to provide an effective and simple adjustable ash sifter which is adapted to be installed in the ashpit of a hot air furnace.

Objects relating to details and economies of construction and operation will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The invention is clearly defined and pointed out in the claims.

A structure which is a preferredembodr ment of my invention is clearly illustrated in the accompanying drawing, forming a part of this application, in which:

Fig. I is a perspective view of a furnace with my improved ash sifter in position in the ashpit, the furnace door being open.

Fig. II is a side elevation View of the structure, the sides being shown in broken section and a part of the handle being broken away.

Fig. III is a plan view of the structure as seen in Fig. II, a portion of the side wall of the furnace being shown in section to show the method of attaching and securing the main frame of my improved ashsifter in lace.

Fig. I 7 is a detail transverse sectional view on line 4-4 of Fig. III, showing the adjustability of the shaker and its support.

Fig. V is an enlarged detail sectional View on line 5-5 of Fig. III, showing the details of construction of the roller bearing for the sifter.

Fig. VI is a detail plan view of one of the side rails showing the disposition of the supporting legs, cross-bar and bearing rollers for the sifter.

Fig. VII is an enlarged detail longitudinal sectional view on line 7-7 of Fig. III, showing details of construction of the detachable handle and socket for the sifter.

In the drawing the sectional views are taken looking in the direction of the little arrows at the ends of the section lines,

Serial No. 517,945.

furnace of usual design. 2 is the ashpit.

3 is the ashpit door, and 4: the front damper on the ashpit door, all'inthe usual position and relation of such parts in a hot air furnace.

Thus the ashpit is disposed with adjustable supporting framework for my sifter comprising adjustable cross bars 5 and 6 having upturned outer ends 5' and 6',isee Fig. IV, held adjustably together by stove bolts '7, 7. Angle bar side rails 8, 8 are secured to the outer ends of these cross bars by suitable bolts 9, 9. Bearing rollers 10 are disposed in the side bars 8', 8 as seen in Fig. V. Adjustable legs 11 are at each corner provided with a series of holes 12 at their upper ends for receiving bolts 13 whereby the height of the frame or the length of the legs may be adjusted.

Flexible bars 1 1 containing a series of holes 15 are secured to the front end of the side bars by the bolts 13 at that point. The front ends of these flexible bars are perforated at 16 and are secured to the side walls of the furnace by bolts 17 ,see Figs. II and III. The sifter is made up of 0pposed symmetrical sides 18, 19, folded into laterally projecting flanges 20 at the bottom which receive sections of screen 21, 21. These parts overlap each other and are secured adjustably together by stove bolts 22, 22 at the rear, which is conformed to the rear end of the ashpit, and by bolts 23 at the forward end. The forward end is also supported by the adjustable crossbars 24 overlapped at their middle and having rear- Wardly turned ends secured to the sifter frame by bolts 26. A centrally disposed handle shank 27 is secured in place by the bolt 28. A handle 29 is provided with a lateral lug 30 engaging in a bayonet slot 31 whereby the handle may be readily inserted and removed. The structure is adjusted at such height that this handle can be inserted through the opening of the front damper 4 and the sifter can be shaken by forward and back reciprocation, it being a matter of no consequence that a considerable quantity of the coal comes down with the ash. This can be done while the fire is burning and the strong upward draft through the coal after it i fr e fr m the ashes will enablethe ashes to be effectively sifted without the escape of dust from the furnace as the strong draft will prevent the escape of dust from the furnace.

YVhen the ash is shaken out the sieve can be at once withdrawn and the coal thrown into the tire door above. The ashes can then be taken up.

I am aware that ash sifters have been pro vided for use in the ashpit heretofore, but my improvement is of special advantage on account of its complete adjustability and its security and effectiveness.

I desire to claim the invention precisely as I have shown it and the details thereof and also more broadly as I have pointed out in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In an ash Sifter, the combination of a suitable framework with adjustable cross bars with suit-able supporting legs and a flexible attaching bar for securing the same within a furnace, longitudinal bars with roller bearings, a sieve made up ofsymmetrical halves telescopingone within the other with bolts for securing the same together, a handle socket at the front thereof, and a handle with a bayonet joint for engagement with said socket for shaking the sieve within the ashpit, as specified.

2. In an ash sifter, the combination of a suitable adjustable framework, provided with longitudinal ways, with. adjustable flexible straps to attach the same to the side walls of an ashpit, a sieve made up of sy1nmetrical halves telescoping one within the other. means for securing the same adjustably together, and a detachable handle with means for attaching it to the front of said sieve, coacting as specified.

In witness whereof, l have hereunto set my hand and seal.

JOHN RAPP. L. s] 

